The promised MCU timeline was presented in the
Marvel Studios: The First 10 Years sourcebook. They condense the 2008-2018 releases into 2010-2017 (with the exception of the first
Captain America, or course.) Not listed is
Ant-Man and the Wasp, but it's placement is obviously concurrent with Infinty war, and
Captain Marvel, which will take place in 1995.
In Phase One, 2008 release
Iron Man has been bumped to 2010, while fellow 2008 release
The Incredible Hulk is bumped to 2011.
Thor and
Avengers still take place in the year they were released, but 2013's
Iron Man 3 takes place in 2012 (Tony is obviously telling the story to Banner in 2013, but the events take place at Christmas 2012).
Phase Two is the most straightforward. 2013's Iron Man 3 is a story being told in 2013, while the rest of Phase Two indeedtakes placein the the year that they were released, with Phase Three's Guardians of the Galaxy vol. 2 thrown into 2014.
Phase Three is where things get creative again. 2016's
Civil War is properly placed in 2016, as is 2017's
Spider-Man: Homecoming. 2016's
Doctor Strange takes place from 2016 and into 2017. 2017's
Thor: Ragnarok and all of 2018 releases take place in 2017. My only complaint (but far from my only question) would be placing 2018's
Black Panther in 2017 when it should be in 2016, along with
Civil War and
Homecoming. In fact, BP should actually take place before
Homecoming as it picks up two weeks after CW and the story unfolds in a matter of days, a week at most. Meanwhile, the bulk of
Homecoming takes place starting three months later.